From: Robert Sheehan Date: 2006-12-22T17:30:15+09:00 Subject: Re: How to run the new jirb console Apologies for replying to my own post. I got it to run by copying jirb.bat, calling it jirbconsole.bat and changing the execute line after the following comment: rem ----- Execute The Requested Command --------------------------------------- to: %_STARTJAVA% -ea -cp "%CLASSPATH%" -Djruby.base="%JRUBY_BASE%" -Djruby.home="%JRUBY_HOME%" -Djruby.lib="%JRUBY_HOME%\lib" org.jruby.demo.IRBConsole %* Then "jirbconsole" works for me (in most circumstances).